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Lilit [14]
4 years ago
11

If you are using a wrench to loosen a very stubborn nut, you can make the job easier by using a "cheater pipe." This is a piece

of pipe that slides over the handle of the wrench, making it effectively much longer. Explain why this would help you loosen the nut.
Physics
2 answers:
pentagon [3]4 years ago
5 0

Answer:

Explained

Explanation:

The cheater pipe extends the wrench in  radial direction, providing a larger momentum for the force you exert.

For a given force the torque exerted with the cheater pipe is larger.

Mathematically we can write that

τ = r×F and τ'= r'×F

now since r'> r

⇒ F'>F

Roman55 [17]4 years ago
5 0

Answer:

When we use the “cheater pipe” torque increases and loosening the nut becomes easy.

Explanation:

The formula for the torque is given by,

T = rF      ……….. (i)

Where,

r = moment arm

F= Force exerted by hand

When “cheater pipe” is used, there is increase in the moment arm and consequently increase in applied torque to nut at constant force. Due to this reason loosening the nut using “cheater pipe” becomes easy.

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If the angle of incidence is 30°, degrees what is the angle of reflection? ​
algol13

Answer:

Angle of reflection = 30°

Explanation:

One of the laws of reflection is that the angle of incidence is equal to the angle of reflection.

The angle at which the light strikes the mirror is called the angle of incidence while the angle at which the light gets reflected back is called angle of reflection.

In this case, the angle of incidence is 30 degrees. So, we can say that the angle of reflection is also equal to 30 degrees.

3 0
4 years ago
Calculate the mass of air of density 1.2kgm-3 in a room of dimensions 8m by 6m by 4m.
77julia77 [94]

Answer:

230.4kg

Explanation:

volume of the room = l× b×h

volume= 8×6×4

volume=192m3

density= mass/volume

hence mass= density × volume

mass= 1.2kgm-3 × 192m3

mass= 230.4kg

5 0
2 years ago
The elements selenium and oxygen are both poor electrical conductors. In which section of the periodic table are they
murzikaleks [220]

Answer:

The answer to your question is Nonmetals

Explanation:

Nonmetals   they are bad conductors of heat and electricity except graphite.

Metalloids   they are less conductors of electricity than metals.

Noble gases  they conduct electricity.

Halogens they are not metals and do not conduct electricity.

From this information, we conclude that Oxygen and Selenium are nonmetals.

6 0
3 years ago
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 68 kg person devel
Tresset [83]

Answer:

Speed = 2.25 m/s

Explanation:

(Assume a running step is 1.5 m long)

Given the following data;

Energy = 0.6J

Power = 61 Watts

Mass = 68 kg

To find how fast the person running;

First of all, we would determine the total mechanical energy being dissipated by the person.

Total energy = 0.6 * 68

Total energy = 40.8 Joules

Next, we find the time;

Energy = power * time

40.8 = 61 * time

Time = 61/40.8

Time = 1.5 seconds

Finally, to find the speed;

Speed = distance/time

Speed = number of steps * time

Speed = 1.5 * 1.5

Speed = 2.25 m/s

4 0
3 years ago
1. What is the difference between mass and weight?
ddd [48]

Answer:

Weight is just how heavy something is.  Mass is the quantity of inertia possessed by an object. Another way of explaining mass is how much matter is in an object or how much "stuff" is in an object.  Another important difference is that weight is a force and mass is not.  

Explanation:

3 0
3 years ago
Read 2 more answers
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